It does not make any difference on the length you decide on. Do you worry about the length of the cable from your breaker to the outlet? It's just a lengthening of that. If someone claims to hear a difference they are imagining it!
How short should a power cable be for my amp?
I have two Parrasound amps. I'm looking to make my own cable.How short can the cable be w/o ill effect? AMB Dan M.